1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> 2<html lang="en"> 3<head> 4<title>aert1.0/11.2.1</title> 5</head> 6<body> 7 8<center>Hello</center> 9 10</body> 11</html> 12